Apparatus for the manufacture of lead oxid.



W. EGKFORD. APPARATUS vPOR THE MANUPAGTURE OF LEAD OXID.

` APPLICATION FILED OCT.1, 1912. 1,1 04,786r Patented July .28, 1914.

3 SHEETS-SHEET l.

W". EGKPORD.

APPARATUS FOR THBMANUPAGTURE OP LEAD OXID.

'Patented July 28,1914,

APPLICATION FILE.D,OGT.1, 1912.

3 SHEETS-SHEBT 2.

WfEGKFORD.

APPARATUS FOR THE M'ANUFAUTURE 0F LEAD OXID.

APPLICATION FILED 00T.1, 1912..l

Patented July 28, 1914.

s SHEETS-SHEET 3.

im; www] Sil Noren lilales, have invenied cerisin new niospliei'e, as described in lie sjpecilication io ted willi diaphragme and venes, the nncwinters@ nonsens',

F RHYL, WALES.

AEPMTUS :FR MANUFLCTURE OF LEAD OXID.

specification of Leners intent.,-

atenied July 2S, .1914.

Application llci Getal-:er 1, m: Serial NQJWQ;

To all idiom iii' may concern lie it known thai l., rimini ECKFORD, a subject of ille King of Great Brilain, and ding in liliyl, in the county of Flint,

and useful llnpi'oveinenis in Apparatus for libe e'lannfecignre of Leed xid, oi which l'ie following is s specification.

This invenlion relaes to apparatus for the manufacture of lead oxid, comprising a lead nieling pot and settling chambers; the molten lead is converted in the melting pot in any suitable and well known Inanner into lead oxid which is carried by sir cui-renie inlo settling chambers to be there deposited.

'llie inveniion is particularly applicable ilo melting pots of the type described in 'the specilication to British Leiters Patent No. 3035i of lill() granted to me, and lo melting pois connecl'ed io the settling chambers in sucli manner as to inaininin a pressure in the said poi. and chambers which is some what lessi:1 an tba-it of the surrounding atlnitisli Le'lers Patent lio, 26:25:? of i908, granted lo me.

According to ille present invention l it in the outlet leading from the melting poi io the sei'eiing chambers a rotary hopper *cion of which is to arrest the heavier or grosser psricles carried by the sreamoi" eir passing from the melting pot to ille setiling chamber, and to return tlleni to ille nieling poi.

The invention is illnstrae i in elle aecompanving drawings es applied 'io cied and conneced 's in the manner des above mentioned specification y bnl ii so nndersood i; elle inveniion is noil rew @kaneel/ed :inner l ine drawings, l v ion oi; ine apparaisse wim me sliovvn in section on the line l, v is side elevation W s 'M '3 .in seciiion on the line il, il, of? l.; Fig. plan in section ilse line lll, lflli, of Eig. 2; L is a. plan, similar so Fig. 3 but @to a larger scalei, and shows a hopper somewhat longer axially enen that Sleeves in Figs, l to 3; and l? ig. 5 is a detailview of the diaphragms.

A is the lead melting pot; the gigs of leali are fed in at al, and air, or ail' ,and steam, ,is supplied by `be pipe c3, and tbe dross formed is disinegrated by tbe beater o2, all as described. in the speciication first mentioned above. Tlie eutlez'ofllie melting pot is connected by a casing B to the first settling chamber C, and the chamber C is connected to the melting pol through a fan D and connecting air trunks d1, lie fan serving to circulate the ain between the settling chambers and the melting pot by withdrawing air from the former and deliverin it to the latter, Wlilepoe it passes throgh t 1e cas ing B io the seilin chambers. An exbelasting fan Uv is fig/ieg to the settling chamber, and this 4fanf continuously withdraws air from the lsystem at such a rate, compared with the raie atr which air ains access to the syslem, :is to preserve t e circulaiing air tlirougliou; ehe system at a pressure somewhat less than that; of the atmosphere, so ibas any leakage which may take place is an ini/verd ieakege, as described in tbe second above mentienedspecilcation.

Thehopper E is. located outside the lead meltin pot, its inlet end making joint with a suit-a ly arranged opening formed in the 'wall of the melt-ing pot, the bop er being held in position axiallv by a suitaile ring e1 so that it may rotate in the said opening without lubrication; its outlet end opens into che casing B leading from the melting 'pot to the settling chambers. The hopper is rotated preferably by a shaft e2 attached by 'radial arms e3 to the outlet end of the liep-A per, said shaft passing out of the said casing and. being provided with suitable driving means l?. The hopper is preferably a rnstnin ci s cone, the inlet end. being preferably largei` in diameeer than the outlet end, and il; is fitted Wih a series of longitudinally disposed venes ci' of angle irons elle like, each of which may lie in the plane containing elle axis of the hopper, or be inclined io the said plane.

Arranged transversely across the hopper nre s series el diaphrsgms es; these are preferably offsenii-eircnlar shape, the diameter of the semi-circle coinciding with the diameter of elle hopper., a portion of the `diaphragm at die crown of the semi-circle .being cui; away es et e so form e passage-wey for means for rotating the hopper substantially lier means for rotatin the ho er, a second i g Pg communicating passage-wa etween the chamber and the pot, and a an fitted to said passageway to circulate the air between the pot and the chamber; substantially, as described.

14. In ilmbination, a lead melting pot, a settling chamber, a rotary hopperthrongh which the pot 'communicates with the cham-` ber, means for rotating the hop er, a second communicating passage-way etween the chamber and the pot, a fan tted to said passage-way to circulate the air between the pot and the chamber, anda fan litted to the chamber and adapted to Withdraw air therefrom; substantially asv described.

15. In combination, a lead melting pot,

'and oxi the c amber, and means for rotating the -ho per; substantially as described.

^ '6. In combination, a leadmelting pot, a

sealed inlet for the' introduction of the pig lead, a ypipe for conveyin the agit-ating an' oxidizing Huid to the -mo ten 1ead','and a rotary beater .to disintegrate thedross formed;

ia sealed. inlet for the introdnction of the a settling chamber, a rotary hopper through A. which the pot communicates with the chamber, means for rotatin adapted to withdraw air from t e settling'v chamber and deliver it to the melting sot, and a fan in the settling chamber adapte to the ho er a fan maintain the circulating air at a pressure less than that of the atmosphere; substantially as described.

'In testimony whereof I aix my signature in presence o t'wo witnesses.

l WILLIAM ECKFORD.-

Witnesses:

J. E. LLOYD BAME, JOSEPH-E. Hlns'r. 

